en_tn_lite_do_not_use/mat/24/43.md

that if the master of the house ... broken into

Jesus uses a parable of a master and servants to illustrate that his disciples should be prepared for his return.

the thief

Jesus is saying he will come when people are not expecting him, not that he will come to steal.

would not have allowed his house to be broken into

"would not have allowed anyone to get into his house to steal things"